Heating and ventilating apparatus



(No Model.)

T. DUNMORE. HEATING AND VENTILATING APPARATUS.

No. 421.562. Patented Feb. 18, 1890.

N. PETERS. Phnko-Lilhngnplmr. Waahingtnm at;

UNITED STATES ATENT OFFICE.

THOMAS DUNMORE, OF NORIVALK, OHIO.

HEATING AND VENTILATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 421,562, dated February18, 1890.

I Application filed April 8, 1889. Serial No- 306,370- (No model.)

T0 on whom it mag concern.-

Be it known that I, THOMAS DUNMORE, a citizen of the United States,residing at Nor walk, in the county of Huron and State of Ohio, haveinvented a new and useful Heating and Ventilating Apparatus, of whichthe following is a specification.

This invention relates to an improved system of heating and ventilatingchurches, school-houses, and other large public halls, as well asprivate dwellings; and it has for its object to cause a more perfectcirculation of air than is readily attained by the ordinary methods nowin vogue.

"With this end in view the invention consists in the improvedconstruction and arrangement of the heating radiators, the coldairducts, and foul-air fines, which will be hereinafter more fullydescribed, and particularly pointed out in the claims.

In the drawing hereto annexed, which represents a vertical sectionalview of a building or structure equipped with my invention, A Adesignate the Walls of the building, and

.B B the floors, whereby the structure is subdivided in the usualmanner.

0 designates afurnace, which is preferably located in the basement, andD D are the steam pipes leading from said furnace to the radiators E E,which are'located at convenient points upon the several floors of thebuilding.

Each of the radiators is partially surrounded by a box. or casing F,constructed, preferably, of sheet metal, and extending to nearly halfthe height of the radiators, although it will of course be understoodthat the relative height of the radiator andlits surrounding box orcasing may be altered to suit the circumstances of each case. In theflooring below the casings F and communicating with the same arecold-air reservoirs Gr, which communicate with the outer air throughducts I-I, constructed, preferably, between the j oists of the fiooriug, although the said cold-air ducts may, when necessary, be in the shapeof flues extending through the rooms of the building in any manner whichshall be deemed most convenient The cold-air flues or ducts may beprovided at or near their outer ends with valves H. to regulate theadmission of cold an.

It will be seen from the foregoing that fresh and pure cold air may betaken from outside the building and conveyed to the cold-air boxeslocated below and partially surrounding the radiators, by contact withwhich the said cold and pure air will be thoroughly heated before it isdischarged into the rooms of the building. It will also be seen that theboxes or casings F, which surround the radiators at their lower ends,prevent the cold-air from spreading along the floor of the room beforeit has become thoroughly heated, and that the very common objection ofcold floors is thus to a considerable extent avoided.

I I designate the foul-air flues, which are suitably constructed in theseveral rooms of the building, and which serve to convey the vitiatedair from the said rooms to the attic room R where the said foul-airfines are provided with self-acting valves J to regulate the escape ofthe vitiated air. The roof of the building has a ventilator K, throughwhich the foul air eventually escapes. To cause an upward draft in thefoul-air fiues, I locate within the latter several coils L ofsteam-pipes, by contact with which the foul through registers R, locatedat the floors "of the room, the escape of air from which may thus beperfectly regulated.

It will be seen that by the foregoing ar rangement of the foul-air fluesthe vitiated air is discharged into the attic of the building beforebeing allowed to escape. WVhen the foul-air flues open directly into theouter air, even when they are provided with regulating-valves, the draftin said flues is liable to be impaired and interfered with by storms andother atmospheric conditions.

Not so by l the herein-described construction. and ar- C rangement,whereby the vitiated air may, under all conditions of the outeratmosphere, be discharged unobstructedly into the attic, whence it mayescape through the ventilator. It will, furthermore, be seen that theself-acting valves J will prevent any possibility of back-draft, or ofthe foul air being driven through the fines I back into the rooms bywind-storms, which might otherwise have a tendency to that effect.

It will be seen from the foregoing description that the cold and pureair 011 being taken from the outside is thoroughly heated before it isdischarged upwardly into the rooms. After rising to the ceiling it willbe gradu ally displaced by the fresh air continually entering, and,being furthermore gradually cooled, it will descend in a downwardcurrent along the walls of the room,and be attracted to the foul-airregisters, owing to the upward draft in the foul-air fines. In thismanner an absolutely perfect circulation of the air will be kept up, andthe air contained in each room may be removed as frequently as may bedesired by properly regulating the entrance and exit valves orregisters.

It is obvious that the particular construc- 1 room, substantially as setforth.

tion of the furnace and the radiators in no way affects the operationand utility of my 1 invention; also, that my invention is applicable toother heating devices than steam-radiators without departing from thespirit of my invention.

Having thus described my invention, I clai1nof the latter, heatingdevices arranged in said foul-air flues to cause an upward drafttherein, and a ventilator in the roof of the building to carry off thevitiated air from the attic- In testimony that I claim the foregoing asmy own I have hereto affixed my signature in presence of two witnesses.

THOMAS DUNMORE. itnesse,

\V. R. OWEN, O. W. WILLIAMs.

